What is Weibull distribution?
A probability distribution widely used to analyze lifetime data. Its shape parameter can represent early-failure, random-failure and wear-out behavior.
Field: Reliability
Weibull distribution in the explanations
In the Weibull distribution, a shape parameter m less than 1 represents the early-failure type, with failure rate decreasing over time; m = 1 represents the constant random-failure type; and m greater than 1 represents the wear-out type, with failure rate increasing.
Which distribution, often used in reliability data analysis…Results from small test devices are converted to the total gate area of a chip using the Weibull distribution to estimate product lifetime.
For gate insulator breakdown lifetime, why must the differe…
Questions that mention Weibull distribution (2)
- Which distribution, often used in reliability data analysis, can represent early-failure, random-failure and wear-out types depending on its shape parameter?
- For gate insulator breakdown lifetime, why must the difference between the area of test devices and the total gate area on an actual chip be considered?
Related terms
Arrhenius model Bathtub curve Electromigration ESD (electrostatic discharge) FIT rate Hot carrier injection (HCI) Latch-up MTTF (mean time to failure) NBTI (negative bias temperature instability) Soft error